CN109556436B - Plate-fin heat exchanger for high-viscosity oil - Google Patents
Plate-fin heat exchanger for high-viscosity oil Download PDFInfo
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- CN109556436B CN109556436B CN201811646800.5A CN201811646800A CN109556436B CN 109556436 B CN109556436 B CN 109556436B CN 201811646800 A CN201811646800 A CN 201811646800A CN 109556436 B CN109556436 B CN 109556436B
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- 239000012530 fluid Substances 0.000 claims abstract description 226
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 6
- 239000012809 cooling fluid Substances 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F2009/0285—Other particular headers or end plates
Abstract
The invention provides a plate-fin heat exchanger for high-viscosity oil, and relates to the field of heat exchangers; the heat exchanger comprises a core body, wherein the core body comprises a hot channel for flowing a heat supply fluid and a cold channel for flowing a cold fluid; the hot channel and the cold channel are arranged at intervals; a fin through which a heating fluid flows is provided in the heat channel; the fins divide the thermal channel into a plurality of fin channels; the width of the fin channel gradually increases from one end of the fin channel to the other end of the fin channel; the increasing directions of the widths of two adjacent fin channels are opposite. The plate-fin heat exchanger for high-viscosity oil solves the problems that in the prior art, the flow channel width is unchanged, so that the speed is reduced and the heat transfer efficiency is reduced due to gradual cooling of a hot fluid.
Description
Technical Field
The invention relates to the field of heat exchangers, in particular to a plate-fin heat exchanger for high-viscosity oil.
Background
Plate-fin heat exchangers are generally composed of baffles, fins, seals, and deflectors. The fin, the guide vane and the seal strip are placed between two adjacent partition boards to form an interlayer, which is called a channel, the interlayer is overlapped according to different modes of fluid, and the interlayer is brazed into a whole to form a core body, and the core body is the core of the plate-fin heat exchanger. Plate-fin heat exchangers have been widely used in the petroleum, chemical, natural gas processing industries, and the like.
The width of the fin channel of the existing plate-fin heat exchanger is kept unchanged, and the difference of inlet and outlet fluid flow rates is large due to large temperature difference of inlet and outlet fluids, the flow rate of a high Wen Duanliu body is too high, the flow rate of a low-temperature end fluid is too low, and the heat transfer effect is poor.
Disclosure of Invention
The invention provides a plate-fin heat exchanger for high-viscosity oil to solve the problems of slow speed and low heat transfer efficiency caused by gradual cooling of a hot fluid due to constant width of a flow channel in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides a plate-fin heat exchanger for high-viscosity oil, which comprises a core body, a left end socket arranged on the left side of the core body and a right end socket arranged on the right side of the core body; the core body comprises a hot channel for the circulation of a heating fluid and a cold channel for the circulation of a cooling fluid; the hot channel and the cold channel are arranged at intervals; the left end of the thermal channel is communicated with the left end socket; the right end of the heat channel is communicated with the right seal head; a fin through which a heating fluid flows is provided in the heat channel; the fins divide the thermal channel into a plurality of fin channels; the width of the fin channel gradually increases from one end of the fin channel to the other end of the fin channel; the increasing directions of the widths of two adjacent fin channels are opposite; the left end socket comprises a left hot fluid inlet and a left hot fluid outlet; the right end enclosure comprises a right hot fluid inlet and a right hot fluid outlet; the left hot fluid inlet is communicated with one wide end of the fin channel; the right hot fluid outlet is communicated with the narrow end of the fin channel; the right hot fluid inlet is communicated with one wide end of the fin channel; the left hot fluid outlet is communicated with one end of the fin channel, which is narrow in width.
In the plate-fin heat exchanger for high-viscosity oil provided by the invention, preferably, the fins extend from the left and right ends of the core body respectively; baffle groups are respectively arranged on the left side and the right side of the core body; two adjacent fins and the baffle plate group enclose a closed channel; the plurality of closed channels comprise a plurality of first closed channels with the fin channels gradually increasing from right to left and a plurality of second closed channels with the fin channels gradually increasing from left to right; the first closed channel and the second closed channel are arranged at intervals; the left end of the first closed channel is communicated with the left hot fluid inlet, and the right end of the first closed channel is communicated with the right hot fluid outlet; the left end of the second closed channel is communicated with the left hot fluid outlet, and the right end of the second closed channel is communicated with the right hot fluid inlet.
The invention provides a plate-fin heat exchanger for high-viscosity oil, preferably, the baffle group comprises:
a first baffle; the first baffle is vertically arranged; the first baffle plate surface is perpendicular to the flowing direction of the hot fluid; the upper end of the first baffle is not lower than the upper end of the uppermost fin of the core body; the lower end of the first baffle is not higher than the lower end of the fin at the lowest part of the core body; the distance between the first baffle plate surface and the core body is the same as the extending length of the fins; the width of the first baffle plate is the same as the width of the heat channel;
and the second baffle extends from the edge of the first baffle to the core body vertically and is fixed with the core body.
In the plate-fin heat exchanger for high-viscosity oil, preferably, the left end of the first closed channel is connected with a first left channel; the left hot fluid inlet is communicated with the first closed channel through the first left channel; the right end of the first closed channel is connected with a first right channel; the right hot fluid outlet is communicated with the first closed channel through the first right channel; the left end of the second closed channel is connected with a second left channel; the left hot fluid outlet is communicated with the second closed channel through the second left channel; the right end of the second closed channel is connected with a second right channel; the right hot fluid inlet is communicated with the second closed channel through the second right channel.
In the plate-fin heat exchanger for high-viscosity oil provided by the invention, preferably, openings are respectively arranged at the left end and the right end of the closed channel; the openings are arranged between two adjacent fins; the length of the opening is the same as the width of the thermal channel; the height of the opening is the same as the height of the cold channel; the first left channel, the second left channel, the first right channel and the second right channel are respectively communicated with the closed channel through the opening.
In the plate-fin heat exchanger for high-viscosity oil provided by the invention, preferably, the left hot fluid inlet penetrates through a plurality of first left channels and a plurality of second left channels; the left hot fluid inlet is communicated with the first left channel; a sealing element for blocking fluid circulation is arranged between the left hot fluid inlet and the second left channel; the left hot fluid outlet penetrates through a plurality of first left channels and a plurality of second left channels; the left hot fluid outlet is communicated with the second left channel; the sealing piece for blocking fluid circulation is arranged between the left hot fluid outlet and the first left channel; the right hot fluid inlet penetrates through a plurality of first right channels and a plurality of second right channels; the right hot fluid inlet is communicated with the second right channel; the sealing piece for blocking fluid circulation is arranged between the right hot fluid inlet and the first right channel; the right hot fluid outlet penetrates through a plurality of first right channels and a plurality of second right channels; the right hot fluid outlet is communicated with the first right channel; the right thermal fluid outlet and the second right channel are provided with the sealing member for blocking fluid communication therebetween.
In the plate-fin heat exchanger for high-viscosity oil provided by the invention, preferably, the fins are one or a combination of a plurality of straight fins, zigzag fins, corrugated fins, porous fins and shutter fins.
The technical scheme has the following advantages or beneficial effects:
1. the width of the fin channel is gradually changed, the hot fluid flows from the wide end of the fin channel to the narrow end, when the hot fluid respectively enters the fin channel 1 from the left hot fluid inlet and the right hot fluid inlet, the hot fluid flows from the wide end of the fin channel to the narrow end, in the flowing process, the hot fluid is continuously cooled, the viscosity of the hot fluid rises, the volume is reduced, the flow rate of the hot fluid is reduced, the blockage and scaling are easily caused, and the heat transfer efficiency is reduced; the width of the fin channel is gradually narrowed, and the flow of the hot fluid is unchanged, so that the flow rate of the hot fluid is gradually increased, and the problems of slow speed and low heat transfer efficiency caused by gradual cooling of the hot fluid due to the fact that the width of the flow channel is unchanged in the prior art are effectively solved; at the same time, the flow rate of the hot fluid is gradually increased, and a certain shearing force is provided, so that the possibility of scaling and blockage is reduced.
2. The width increasing directions of two adjacent fin channels of the same fin are opposite, if the width increasing directions of all the fin channels are the same, the width difference of two ends of the heat exchanger is large, and most of the existing heat exchangers are the same in width at two ends, so that most of installation stations arranged at the places where the heat exchangers need to be installed are the same in width at two ends, and therefore, the heat exchangers with the large width difference at two ends cannot be installed, and space waste is caused even if the heat exchangers can be installed; therefore, the fin channels of the plate-fin heat exchanger for high-viscosity oil provided by the invention are gradually increased from one end to the other end, the width increasing directions of two adjacent fin channels in the same heat channel are opposite, and the space is reasonably utilized, so that the difference of the widths of the two ends of the plate-fin heat exchanger for high-viscosity oil is small, the plate-fin heat exchanger for high-viscosity oil is convenient to install, and the application range is wide.
3. The sealing piece for blocking the fluid circulation is arranged between the left hot fluid inlet and the second left channel, the sealing piece for blocking the fluid circulation is arranged between the left hot fluid outlet and the first left channel, the sealing piece for blocking the fluid circulation is arranged between the right hot fluid inlet and the first right channel, the sealing piece for blocking the fluid circulation is arranged between the right hot fluid outlet and the second right channel, so that the left hot fluid inlet and a plurality of first left channels are communicated only by arranging one channel from top to bottom, the left hot fluid outlet and a plurality of second left channels are communicated, the right hot fluid inlet and a plurality of second right channels are communicated, and the right hot fluid outlet and a plurality of first right channels are communicated, thereby avoiding the complexity of production and processing caused by arranging a plurality of channels, reducing the occupied space and greatly reducing the production cost.
Drawings
The above features and advantages of the present invention will be better understood from the following detailed description of non-limiting embodiments taken in conjunction with the accompanying drawings. Like numbers refer to like parts throughout. The drawings are not intended to be drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic structural view of a plate-fin heat exchanger for high-viscosity oil according to embodiment 1 of the present invention;
fig. 2 is a schematic view showing the structure of the fin extension of the plate-fin heat exchanger for high viscosity oil according to embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a closed channel of a plate-fin heat exchanger for high-viscosity oil according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a baffle group of a plate-fin heat exchanger for high-viscosity oil provided in embodiment 1 of the present invention;
fig. 5 is a schematic view showing the structure of the opening of the plate-fin heat exchanger for high-viscosity oil according to embodiment 1 of the present invention;
fig. 6 is a schematic structural diagram of a first left channel, a second left channel, a first right channel and a second right channel of the plate-fin heat exchanger for high viscosity oil provided in embodiment 1 of the present invention;
fig. 7 is a schematic structural diagram of a left hot fluid inlet, a left hot fluid outlet, a right hot fluid inlet and a right hot fluid outlet of the plate-fin heat exchanger for high viscosity oil provided in embodiment 1 of the present invention;
fig. 8 is a schematic structural view of a left hot fluid inlet and a right hot fluid outlet of the plate-fin heat exchanger for high-viscosity oil provided in embodiment 1 of the present invention;
fig. 9 is a schematic view of the structure of the right and left hot fluid inlets and the left hot fluid outlet of the plate-fin heat exchanger for high viscosity oil according to example 1 of the present invention.
Detailed Description
The invention will now be further described with reference to the drawings and specific examples, which are not intended to be limiting.
Example 1:
as shown in fig. 1 to 9, the plate-fin heat exchanger for high-viscosity oil provided in embodiment 1 of the present invention includes a core 1, a left seal head 2 disposed on the left side of the core 1, and a right seal head 3 disposed on the right side of the core 1; the core 1 comprises a hot channel 11 for the passage of a hot fluid and a cold channel 12 for the passage of a cold fluid; the hot channel 11 is arranged at intervals with the cold channel 12; the left end of the heat channel 11 is communicated with the left seal head 2; the right end of the heat channel 11 is communicated with the right seal head 3; the heat tunnel 11 is provided with fins 13 through which a heating fluid flows; the fins 13 divide the heat tunnel 11 into a number of fin tunnels 131; the width of the fin channel 131 gradually increases from one end of the fin channel 131 to the other end of the fin channel 131; the increasing directions of the widths of the adjacent two fin passages 131 are opposite; the left end enclosure 2 comprises a left hot fluid inlet 21 and a left hot fluid outlet 22; the right end enclosure 3 comprises a right hot fluid inlet 32 and a right hot fluid outlet 31; the left hot fluid inlet 21 communicates with the wide end of the fin passage 131; the right hot fluid outlet 31 communicates with the narrow end of the fin passage 131; the right hot fluid inlet 32 communicates with the wide end of the fin channel 131; the left hot fluid outlet 22 communicates with one end of the fin passage 131 having a narrow width; dividing the heat channel 11 into a plurality of fin channels 131 through the fins 13, wherein the width of each fin channel 131 gradually increases from one end of each fin channel 131 to the other end of each fin channel 131, the increasing directions of the widths of two adjacent fin channels 131 are opposite, the left seal head 2 comprises a left heat fluid inlet 21 and a left heat fluid outlet 22, the right seal head 3 comprises a right heat fluid inlet 32 and a right heat fluid outlet 31, the left heat fluid inlet 21 is communicated with one wide end of the fin channel 131, the right heat fluid outlet 31 is communicated with one narrow end of the fin channel 131, the right heat fluid inlet 32 is communicated with one wide end of the fin channel 131, and the left heat fluid outlet 22 is communicated with one narrow width end of the fin channel 131; when the hot fluid enters the fin channels 131 from the left hot fluid inlet 21 and the right hot fluid inlet 32 respectively, the hot fluid flows from the wide end to the narrow end of the fin channels 131, and in the flowing process, the hot fluid is continuously cooled, the viscosity of the hot fluid is increased, the volume is reduced, the flow rate of the hot fluid is reduced, blockage and scaling are easily caused, and the heat transfer efficiency is reduced; as the width of the fin channel 131 is gradually narrowed, the width of the fin channel 131 is narrowed and the flow of the hot fluid is unchanged, so that the flow rate of the hot fluid is gradually increased, and the problems of slow speed and low heat transfer efficiency caused by gradual cooling of the hot fluid due to the unchanged width of the flow channel in the prior art are effectively solved; at the same time, the flow rate of the hot fluid is gradually increased, and a certain shearing force is provided, so that the possibility of scaling and blockage is reduced.
More preferably, the fins 13 extend from both left and right ends of the core 1, respectively; baffle groups 4 are respectively arranged on the left side and the right side of the core body 1; two adjacent fins 13 and the baffle plate group 4 enclose a closed channel 5; the plurality of closed channels 5 include a plurality of first closed channels 51 in which the fin channels 131 gradually increase from right to left and a plurality of second closed channels 52 in which the fin channels 131 gradually increase from left to right; the first closed channel 51 and the second closed channel 52 are arranged at intervals; the left end of the first closed channel 51 is communicated with the left hot fluid inlet 21, and the right end of the first closed channel 51 is communicated with the right hot fluid outlet 31; the left end of the second closed channel 52 communicates with the left hot fluid outlet 22, and the right end of the second closed channel 52 communicates with the right hot fluid inlet 32; the fins 13 extend from the left end and the right end of the core body 1 respectively, the baffle groups 4 are arranged on the left side and the right side of the core body 1 respectively, and two adjacent fins 13 and the baffle groups 4 enclose a closed channel 5; two adjacent fins 13 extending out form a closed channel 5, one part of the hot fluid entering the closed channel 5 flows upwards, the other part flows downwards, and the width increasing direction of the fin channel 131 above the same closed channel 5 is the same as that of the fin channel 131 below the same closed channel; meanwhile, the width increasing directions of two adjacent fin passages 131 of the same fin 13 are opposite; if the width increasing directions of all the fin channels 131 are the same, the widths of the two ends of the heat exchanger are different greatly, and most of the existing heat exchangers have the same widths at the two ends, so that most of the installation stations arranged at the places where the heat exchangers need to be installed are the same in width at the two ends, and therefore, the heat exchangers with the large widths at the two ends cannot be installed, and space waste is caused even if the heat exchangers can be installed; therefore, the fin channels 131 of the plate-fin heat exchanger for high-viscosity oil provided in embodiment 1 of the present invention gradually increase from one end to the other end, and the width increasing directions of two adjacent fin channels 131 in the same heat channel 11 are opposite, so that the space is reasonably utilized, and the difference of the widths of the two ends of the plate-fin heat exchanger for high-viscosity oil provided in embodiment 1 of the present invention is not large, which is convenient for installation, and has a wide application range.
More preferably, the baffle group 4 includes: a first baffle 41; the first baffle 41 is vertically disposed; the surface of the first baffle 41 is perpendicular to the flowing direction of the hot fluid; the upper end of the first baffle 41 is not lower than the upper end of the uppermost fin 13 of the core 1; the lower end of the first baffle 41 is not higher than the lower end of the lowermost fin 13 of the core 1; the distance between the surface of the first baffle 41 and the core 1 is the same as the extending length of the fins 13; the width of the first baffle 41 is the same as the width of the thermal channel 11; a second baffle 42 extending perpendicularly from the edge of the first baffle 41 toward the core 1 and fixed to the core 1; by providing a first baffle 41 and a second baffle 42; the first baffle 41 is vertically disposed; the surface of the first baffle 41 is perpendicular to the flowing direction of the hot fluid; the upper end of the first baffle 41 is not lower than the upper end of the uppermost fin 13 of the core 1; the lower end of the first baffle 41 is not higher than the lower end of the lowermost fin 13 of the core 1; the distance between the surface of the first baffle 41 and the core 1 is the same as the extending length of the fins 13; the second baffle 42 extends from the edge of the first baffle 41 perpendicularly to the core 1 and is fixed to the core 1; during manufacturing, the first baffle 41 and the extended fins 13 are sealed and fixed, the baffle 41 is an integrated mechanism, the number of parts is reduced, and the production and the installation are convenient; then, the second baffle 42 along the periphery of the first baffle 41 is sealed and fixed with the core 1 so that two adjacent extended fins 13 form a closed channel 5.
More preferably, the left end of the first closed channel 51 is provided with a first left channel 61 in a connecting manner; the left hot fluid inlet 21 communicates with the first closed channel 51 through the first left channel 61; the right end of the first closed channel 51 is provided with a first right channel 63 in a connecting way; the right hot fluid outlet 31 communicates with the first closed channel 51 through a first right channel 63; the left end of the second closed channel 52 is provided with a second left channel 62 in a connecting way; the left hot fluid outlet 22 communicates with the second closed channel 52 through a second left channel 62; the right end of the second closed channel 52 is provided with a second right channel 64 in a connecting way; the right hot fluid inlet 32 communicates with the second closed channel 52 through a second right channel 64; the left heat fluid inlet 21 is communicated with the first closed channel 51 through the first left channel 61, the right end of the first closed channel 51 is connected with the first right channel 63, the right heat fluid outlet 31 is communicated with the first closed channel 51 through the first right channel 63, the left end of the second closed channel 52 is connected with the second left channel 62, the left heat fluid outlet 22 is communicated with the second closed channel 52 through the second left channel 62, the right end of the second closed channel 52 is connected with the second right channel 64, and the right heat fluid inlet 32 is communicated with the second closed channel 52 through the second right channel 64; the straight first baffle 41 is provided with the channel, so that the processing is easy and the processing cost is low; the method avoids the difficulty and difficulty in implementation of production and processing caused by directly forming channels on the complex fins 13, simplifies the production and saves the production cost.
More preferably, the left and right ends of the closed channel 5 are provided with openings 53, respectively; the openings 53 are arranged between two adjacent fins 13; the length of the opening 53 is the same as the width of the thermal channel 11; the height of the opening 53 is the same as the height of the cold aisle 12; the first left channel 61, the second left channel 62, the first right channel 63, the second right channel 64 are respectively communicated with the closed channel 5 through the opening 53; specifically, the heights of the first left channel 61, the second left channel 62, the first right channel 63, and the second right channel 64 are the same as the height of the opening 53; the widths of the first left channel 61, the second left channel 62, the first right channel 63, the second right channel 64 are the same as the width of the opening 53; through setting up opening 53 respectively at the both ends about airtight passageway 5, opening 53 sets up between two adjacent fins 13, the length of opening 53 is the same with the width of hot passageway 11, the height of opening 53 is the same with the height of cold passageway 12, the height of first left passageway 61, second left passageway 62, first right passageway 63, second right passageway 64 is the same with the height of opening 53, the width of first left passageway 61, second left passageway 62, first right passageway 63, second right passageway 64 is the same with the width of opening 53 for hot fluid flow space is big, guarantees that hot fluid distributes evenly when flowing into airtight passageway 5, is difficult for causing the jam of passageway, improves heat exchange efficiency.
More preferably, the left hot fluid inlet 21 extends through a number of first left channels 61 and a number of second left channels 62; the left hot fluid inlet 21 communicates with the first left channel 61; a seal 7 for blocking fluid communication is arranged between the left hot fluid inlet 21 and the second left channel 62; the left hot fluid outlet 22 extends through a number of first left channels 61 and a number of second left channels 62; the left hot fluid outlet 22 communicates with the second left channel 62; a seal 7 blocking fluid communication is provided between the left hot fluid outlet 22 and the first left channel 61; the right thermal fluid inlet 32 extends through a number of first right channels 63 and a number of second right channels 64; the right hot fluid inlet 32 communicates with the second right passageway 64; a seal 7 blocking fluid communication is provided between the right hot fluid inlet 32 and the first right channel 63; the right hot fluid outlet 31 extends through a number of first right channels 63 and a number of second right channels 64; the right hot fluid outlet 31 communicates with the first right channel 63; a seal 7 for blocking fluid communication is provided between the right hot fluid outlet 31 and the second right channel 64; by arranging the sealing element 7 for blocking the fluid flow between the left hot fluid inlet 21 and the second left channel 62, arranging the sealing element 7 for blocking the fluid flow between the left hot fluid outlet 22 and the first left channel 61, arranging the sealing element 7 for blocking the fluid flow between the right hot fluid inlet 32 and the first right channel 63, arranging the sealing element 7 for blocking the fluid flow between the right hot fluid outlet 31 and the second right channel 64, the left hot fluid inlet 21 is communicated with a plurality of first left channels 61, the left hot fluid outlet 22 is communicated with a plurality of second left channels 62, the right hot fluid inlet 32 is communicated with a plurality of second right channels 64, and the right hot fluid outlet 31 is communicated with a plurality of first right channels 63, thereby avoiding the complexity of production and processing caused by arranging a plurality of channels, reducing the occupied space and greatly reducing the production cost.
More preferably the fins 13 are one or a combination of a plurality of straight fins, zigzag fins, corrugated fins, porous fins, louvered fins.
When the plate-fin heat exchanger for high-viscosity oil provided by the embodiment of the invention works, hot fluid enters the left hot fluid inlet 21 from the left hot fluid inlet 21, then the hot fluid flows through the first left channel 61 and enters the first closed channel 51, the hot fluid entering the first closed channel 51 respectively enters the fin channels 131 of the fins 13 on the upper side and the lower side of the first closed channel 51, and the hot fluid flows from one wide end to one narrow end of the fin channels 131; the hot fluid flows out from the narrow end of the fin channel 131, sequentially flows through the first closed channel 51 and the first right channel 61 on the right side of the core 1, and finally flows out from the right hot fluid outlet 31; the hot fluid enters the second right channel 64 from the right hot fluid inlet 32, then enters the second closed channel 52, and the hot fluid entering the second closed channel 52 enters the fin channels 131 of the fins 13 on the upper side and the lower side of the second closed channel 52 respectively, and flows from the wide end to the narrow end of the fin channels 131; the hot fluid flows out from the narrow end of the fin channel 131, sequentially flows through the second closed channel 52 and the second left channel 62 on the left side of the core 1, and finally flows out from the left hot fluid outlet 22; the cold fluid flows through the cold channels 12 perpendicular to the hot channels 11 to exchange heat.
In summary, in the plate-fin heat exchanger for high viscosity oil provided in embodiment 1 of the present invention, the width of the fin channels 131 is gradually changed, and when the hot fluid flows from the wide end of the fin channels 131 to the narrow end, and the hot fluid enters the fin channels 131 from the left hot fluid inlet 21 and the right hot fluid inlet 32, respectively, the hot fluid flows from the wide end of the fin channels 131 to the narrow end, and in the flowing process, the hot fluid is continuously cooled, the viscosity of the hot fluid increases, the volume decreases, the flow rate of the hot fluid is reduced, and the blockage and scaling are easily caused, and the heat transfer efficiency decreases; as the width of the fin channel 131 is gradually narrowed, the width of the fin channel 131 is narrowed and the flow of the hot fluid is unchanged, so that the flow rate of the hot fluid is gradually increased, and the problems of slow speed and low heat transfer efficiency caused by gradual cooling of the hot fluid due to the unchanged width of the flow channel in the prior art are effectively solved; meanwhile, the flow velocity of the hot fluid is gradually increased, and a certain shearing force is provided, so that the possibility of scaling and blockage is reduced; the width increasing directions of two adjacent fin channels 131 of the same fin 13 are opposite, if the width increasing directions of all the fin channels 131 are the same, the width difference of two ends of the heat exchanger is large, and most of the existing heat exchangers have the same width at two ends, so that most of installation stations arranged at the places where the heat exchangers need to be installed are the same in width at two ends, and therefore, the heat exchangers with the large width difference at two ends cannot be installed, and space waste is caused even if the heat exchangers can be installed; therefore, the fin channels 131 of the plate-fin heat exchanger for high-viscosity oil provided by the embodiment 1 of the invention gradually increase from one end to the other end, the width increasing directions of two adjacent fin channels 131 in the same heat channel 11 are opposite, and the space is reasonably utilized, so that the difference of the widths of the two ends of the plate-fin heat exchanger for high-viscosity oil provided by the embodiment 1 of the invention is not large, the installation is convenient, and the application range is wide; through arranging the openings 53 at the left end and the right end of the closed channel 5 respectively, the openings 53 are arranged between the two adjacent fins 13, the length of the openings 53 is the same as the width of the hot channel 11, the height of the openings 53 is the same as the height of the cold channel 12, the heights of the first left channel 61, the second left channel 62, the first right channel 63 and the second right channel 64 are the same as the height of the openings 53, and the widths of the first left channel 61, the second left channel 62, the first right channel 63 and the second right channel 64 are the same as the width of the openings 53, so that the flowing space of the hot fluid is large, the uniform distribution of the hot fluid when flowing into the closed channel 5 is ensured, the channel blockage is not easy to be caused, and the heat exchange efficiency is improved; by arranging the sealing element 7 for blocking the fluid flow between the left hot fluid inlet 21 and the second left channel 62, arranging the sealing element 7 for blocking the fluid flow between the left hot fluid outlet 22 and the first left channel 61, arranging the sealing element 7 for blocking the fluid flow between the right hot fluid inlet 32 and the first right channel 63, arranging the sealing element 7 for blocking the fluid flow between the right hot fluid outlet 31 and the second right channel 64, the left hot fluid inlet 21 is communicated with a plurality of first left channels 61, the left hot fluid outlet 22 is communicated with a plurality of second left channels 62, the right hot fluid inlet 32 is communicated with a plurality of second right channels 64, and the right hot fluid outlet 31 is communicated with a plurality of first right channels 63, thereby avoiding the complexity of production and processing caused by arranging a plurality of channels, reducing the occupied space and greatly reducing the production cost.
Those skilled in the art will appreciate that the above-described modifications may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and are not described herein. Such modifications do not affect the essence of the present invention, and are not described herein.
The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art will make many possible variations and modifications, or adaptations to equivalent embodiments without departing from the technical solution of the present invention, which do not affect the essential content of the present invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (3)
1. A plate-fin heat exchanger for high-viscosity oil comprises a core body, a left end socket arranged on the left side of the core body and a right end socket arranged on the right side of the core body; the core body comprises a hot channel for the circulation of a heating fluid and a cold channel for the circulation of a cooling fluid; the hot channel and the cold channel are arranged at intervals; the left end of the thermal channel is communicated with the left end socket; the right end of the heat channel is communicated with the right seal head; a fin through which a heating fluid flows is provided in the heat channel; the heat exchanger is characterized in that the fins divide the heat channel into a plurality of fin channels; the width of the fin channel gradually increases from one end of the fin channel to the other end of the fin channel; the increasing directions of the widths of two adjacent fin channels are opposite; the left end socket comprises a left hot fluid inlet and a left hot fluid outlet; the right end enclosure comprises a right hot fluid inlet and a right hot fluid outlet; the left hot fluid inlet is communicated with one wide end of the fin channel; the right hot fluid outlet is communicated with the narrow end of the fin channel; the right hot fluid inlet is communicated with one wide end of the fin channel; the left hot fluid outlet is communicated with one end of the fin channel, which is narrow in width;
the fins extend from the left end and the right end of the core body respectively; baffle groups are respectively arranged on the left side and the right side of the core body; two adjacent fins and the baffle plate group enclose a closed channel; the plurality of closed channels comprise a plurality of first closed channels with the fin channels gradually increasing from right to left and a plurality of second closed channels with the fin channels gradually increasing from left to right; the first closed channel and the second closed channel are arranged at intervals; the left end of the first closed channel is communicated with the left hot fluid inlet, and the right end of the first closed channel is communicated with the right hot fluid outlet; the left end of the second closed channel is communicated with the left hot fluid outlet, and the right end of the second closed channel is communicated with the right hot fluid inlet;
the baffle group includes: a first baffle; the first baffle is vertically arranged; the first baffle plate surface is perpendicular to the flowing direction of the hot fluid; the upper end of the first baffle is not lower than the upper end of the uppermost fin of the core body; the lower end of the first baffle is not higher than the lower end of the fin at the lowest part of the core body; the distance between the first baffle plate surface and the core body is the same as the extending length of the fins; the width of the first baffle plate is the same as the width of the heat channel; a second baffle extending from an edge of the first baffle perpendicularly to the core and fixed to the core; the left end of the first closed channel is connected with a first left channel; the left hot fluid inlet is communicated with the first closed channel through the first left channel; the right end of the first closed channel is connected with a first right channel; the right hot fluid outlet is communicated with the first closed channel through the first right channel; the left end of the second closed channel is connected with a second left channel; the left hot fluid outlet is communicated with the second closed channel through the second left channel; the right end of the second closed channel is connected with a second right channel; the right hot fluid inlet is communicated with the second closed channel through the second right channel; openings are respectively arranged at the left end and the right end of the closed channel; the openings are arranged between two adjacent fins; the length of the opening is the same as the width of the thermal channel; the height of the opening is the same as the height of the cold channel; the first left channel, the second left channel, the first right channel and the second right channel are respectively communicated with the closed channel through the opening.
2. The plate-fin heat exchanger for high viscosity oil according to claim 1, wherein said left hot fluid inlet extends through a plurality of said first left channels and a plurality of said second left channels; the left hot fluid inlet is communicated with the first left channel; a sealing element for blocking fluid circulation is arranged between the left hot fluid inlet and the second left channel; the left hot fluid outlet penetrates through a plurality of first left channels and a plurality of second left channels; the left hot fluid outlet is communicated with the second left channel; the sealing piece for blocking fluid circulation is arranged between the left hot fluid outlet and the first left channel; the right hot fluid inlet penetrates through a plurality of first right channels and a plurality of second right channels; the right hot fluid inlet is communicated with the second right channel; the sealing piece for blocking fluid circulation is arranged between the right hot fluid inlet and the first right channel; the right hot fluid outlet penetrates through a plurality of first right channels and a plurality of second right channels; the right hot fluid outlet is communicated with the first right channel; the right thermal fluid outlet and the second right channel are provided with the sealing member for blocking fluid communication therebetween.
3. A plate-fin heat exchanger for high viscosity oil according to any one of claims 1 to 2, wherein the fins are one or a combination of a plurality of straight fins, zigzag fins, corrugated fins, porous fins, louver fins.
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| CN201811646800.5A CN109556436B (en) | 2018-12-29 | 2018-12-29 | Plate-fin heat exchanger for high-viscosity oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811646800.5A CN109556436B (en) | 2018-12-29 | 2018-12-29 | Plate-fin heat exchanger for high-viscosity oil |
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| CN109556436B true CN109556436B (en) | 2023-11-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005015106A1 (en) * | 2003-08-08 | 2005-02-17 | Hydrocool Pty Limited | Finned heat exchanger |
| CN202361872U (en) * | 2011-12-09 | 2012-08-01 | 襄阳航力机电技术发展有限公司 | Plate-fin heat exchanger |
| CN103017579A (en) * | 2012-12-18 | 2013-04-03 | 中国科学院理化技术研究所 | Plate-fin type heat exchanger with fluid being flowing back and forth in channel |
| CN209263737U (en) * | 2018-12-29 | 2019-08-16 | 无锡博利达换热器有限公司 | Heavy oil plate-fin heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5128544B2 (en) * | 2009-04-20 | 2013-01-23 | 株式会社神戸製鋼所 | Plate fin heat exchanger |
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2018
- 2018-12-29 CN CN201811646800.5A patent/CN109556436B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005015106A1 (en) * | 2003-08-08 | 2005-02-17 | Hydrocool Pty Limited | Finned heat exchanger |
| CN202361872U (en) * | 2011-12-09 | 2012-08-01 | 襄阳航力机电技术发展有限公司 | Plate-fin heat exchanger |
| CN103017579A (en) * | 2012-12-18 | 2013-04-03 | 中国科学院理化技术研究所 | Plate-fin type heat exchanger with fluid being flowing back and forth in channel |
| CN209263737U (en) * | 2018-12-29 | 2019-08-16 | 无锡博利达换热器有限公司 | Heavy oil plate-fin heat exchanger |
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